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Topic: Unbalanced load on neutral 3 phase?

User: ritelec, Location: Jersey

Asked on: Tuesday, June 1, 2021 at 9:20 pm EDT
Answered on: Thursday, June 20, 2024 at 11:32 am EDT

Question: HiHow do you determine the unbalanced load on a neutral on a 3 phase system?A= 10 ampsB= 13 ampsC= 16 ampsdo the 10 amps across the 3 phase cancel out?then do the 3 amps between b and c?would neutral be 3 amps ? 6 amps? neither?(sorry, maybe this should be in education or calculations)Wondering, thanks

In a balanced three-phase system, the currents in each phase cancel each other out in the neutral wire. This is because the currents in each phase are 120 degrees out of phase with each other.However, in an unbalanced three-phase system, the currents in each phase do not cancel each other out completely. This is because the currents in each phase are not exactly 120 degrees out of phase with each other.To determine the unbalanced load on the neutral in an unbalanced three-phase system, you need to calculate the vector sum of the currents in each phase. The vector sum of the currents is the total current that flows through the neutral wire.In this case, the vector sum of the currents is:10 amps + 13 amps + 16 amps = 39 ampsTherefore, the unbalanced load on the neutral is 39 amps. Flag for review

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